feat: switch sshAgentAuth to rssh

modules/features/services/openssh.nix

@@ -10,8 +10,8 @@ in
 {
   flake.modules.nixos.ssh-agent-auth = {
     security.pam = {
-      sshAgentAuth.enable = true;
-      services.sudo.sshAgentAuth = true;
+      rssh.enable = true;
+      services.sudo.rssh = true;
     };
   };